The answer is c. y=x-2 i believe
Step-by-step explanation:
-4m -5n = 1 ------------------(1)
-6m +12n = -18--------------(2)
multiplying eq (1) by 3 and (2) by 2
therefore, the new eq obtained is
-12m -15n = 3 --------------(3) subtracting (3) AND
-12m +24n = -36-----------(4) <u>(</u><u>4</u><u>)</u>
(+) (-) (+)
-----------<em>-</em><em>-</em><em>-</em><em>-</em><em>-</em><em>-</em><em>-</em><em>-</em><em>-</em><em>-</em><em>-</em><em>-</em><em>-</em><em>-</em><em>-</em>
<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>-</em><em>3</em><em>9</em><em>n</em> = 39
n= -1 ------------(5)
subtituting (5) in (1)
therefore,
-4m -5×-1 =1
-4m +5=1
-4m=1-5
-4m=-4
m= 1
hence calue of m is 1 and n is -1
Answer:
No, the area of the dilated triangle will increase by a factor of 9
Step-by-step explanation:
When the scale factor by which the dimensions is dilated = 3, we have;
The original length of base = b
The base length of the dilated triangle = 3×b
The original height of the the triangle = h
The height of the dilated triangle = 3×h
The original area of the triangle = 1/2 × base × height = 1/2×b×h
The area of the dilated triangle = 1/2 × base of dilated triangle × height of dilated triangle
∴ The area of the dilated triangle = 1/2× 3 × b × 3× h = 9×1/2× b×h
Which gives;
The area of the dilated triangle = 3²×1/2× b×h= (Scale factor)²× The original area of the triangle.
From 3² = 9, we have;
The area of the dilated triangle = 9 × The original area of the triangle.
Therefore;
The area of the dilated triangle will increase by a factor of 9.
Answer:
2
Step-by-step explanation:
a = 1/2ab
~Divide 1/2a to both sides
2 = b
Best of Luck!